EDAQuino-supported experiments in science education

Gergely MAKANDepartment of Technical Informatics, University of Szeged, Árpád tér 2, 6720 Szeged, Hungary

Ágota LANGFaculty of Forestry, University of Sopron, Bajcsy-Zsilinszky u 4, H-9400 Sopron, Hungary

Berzsenyi Dániel Lutheran High School, Széchenyi tér 11, H-9401 Sopron, Hungary

János TRAUERAttila József Secondary Grammar School, Csanád vezér tér 6, 6900 Makó, Hungary

Katalin KOPASZDepartment of Optics and Quantum Electronics, University of Szeged, Dóm tér 9, 6720 Szeged, Hungary

Mátyás BEJÓ, Barnabás MOLNÁR, Áron SZTOJKASoprobotics Workshop

What is EDAQuino?

• EDAQuino is an completion for Arduino• Additional hardware and software have been developed

• keep simplicity in focus

• To support experimenting in education• Measurements with any kind of analog sensors

What is Arduino?

•Programmable circuit board (by PC)• It can measure, process and control things

•Widely spread worldwide

•Created for educational goal• Great opportunities for

any kind of applicational field

https://www.elektor.com/arduino-uno-r3

Today’s devices

Processorand

Software

PHYSICS ELECTRONICS CS/MATH

REAL VIRTUAL

Externalsignals

SensorSignal

conditioningA/D

converter

Impact ActuatorSignal

conditioningD/A

converter

Arduino: cheap, simple, efficient, transparent

Processorand

Software

Externalsignals

SensorSignal

conditioningA/D

converter

EDAQuino „shield” – one circuit/many sensors

V

A

R

Sensors equivalentelectronic components

Voltage output sensors

AccelerationTemperatureMagnetic fieldPressureRelative humiditypH…

0

3,3V

10

k

V

Arduino

Resistance-output sensors

3,3V

10

k

R

TemperatureLight intensityPressureForceDisplacementRotation…

1

Arduino

Software on PC

•Configure hardware (switches, sample rate)

•Receive data stream

•Processing data

User configures the sensors

Experiences in education

• Contributing teachers

• Enikő Erdélyiné Bérci (Balassi Balint Secondary School, Budapest)• Árpád Gutai (Miklós Radnóti High School in Szeged)• Norbert Horváth (Baar Madas Reformed High School, Budapest)• Ágota Lang (Faculty of Forestry, University of Sopron / Berzsenyi Dániel

Lutheran High School, Sopron)• Anita Orbán (Déri Miksa Vocational Secondary School, Szeged)• Péter Szalai (Katona József High School, Kecskemét)• István Szittyai (Bányai Júlia Secondary Grammar School, Kecskemét)• Péter Tarján (University of Nyíregyháza)• János Trauer (Attila József Secondary Grammar school, Makó)• Fanni Vitkóczi (ELTE Trefort Ágoston Practice Grammar School, Budapest)

EDAQuino experiences in education

• Arduino with EDAQuino platform is a useable tool in physics education• Without programming

• Many physics teachers do not have enough capacities to learn programming• Our device allows teachers to focus on the experimental work

• Enables organizing student experiments • Can be also a tool of inquiry-based learning (IBL)

• With an expertise in programming and sensorics, realisable experiments can be widely extended

EDAQuino experiences in education

ruler with insulation stripe

Collisions(inertia, momentum)

acceleration

free fall acceleration

pendulum

photogate

ruler with insulation stripe

photogate

photogate

cart

plummet

rope with pulley

Experiments with a transmissive photogate

Measurement results in spreadsheets

Excel

Geomatech:http://tananyag.geomatech.hu/b/511653#material/1465085

22,5

23

23,5

24

24,5

25

25,5

26

0 500 1000 1500

Te

mp

era

ture

[°C

]

time [s]

Heat loss by evaporation, using two thermistors

wet thermistor

control thermistor

Temperature measurement

optosensor

Pulse wave

Plethysmography

accelerometersensor

spring

Acceleration vs time graph

Accelerometer sensor and vibration

Variable DC power supply

Computer cooling ventillation fun

magnet

Hall-sensor

Voltage-time graph withlevel-crossing detector

y = 6.8518x - 7.999R² = 0.9968

0

10

20

30

40

50

60

0 2 4 6 8 10

Rota

tional

fre

quen

cy [

Hz]

Voltage [V]

Relation between voltage and rotational frequency of a computer

cooling ventillating

Hall-sensor: rotational frequency

Voltage v.s. time (in real time graph)

magnets

Moving coil

Edaquino

Demonstrate the electromagneting induction withmeasure voltage different between channel B and C

Voltage v.s. time (in real time graph)

Edaquino

coil with iron core

compass needle

Demonstrate the electromagneting induction withmeasure voltage different between channel B and C

Voltage v.s. time (in real time graph)

magnet

jumper cable

Edaquino

Demonstrate the electromagneting induction withmeasure voltage different between channel B and C

Webpage – MISZAK

•More information is available at:http://www.inf.u-szeged.hu/miszak/en/• Publications• EDAQuino (open source)• Videos

• EDAQuino

• Arduino

• Arduino projects

Installation

Installation – from pendrive

• Copy EDAQuino-master folder from pendrive (only in case of personal notebook)

• In EDAQuino folder, install arduino-1.8.9-windows.exe (only in case of personal notebook)• Please do all driver installation when messages pop up

• Run edaquino.ino (click ok on folder creation message)• Connect the Arduino board to the notebook with the USB

cable• Wait some seconds for the driver installation• In the Tools/Port menu choose the biggest number of COM to

connect Arduino IDE and Arduino Uno

Upload the firmware and start the software

•Click on the right arrow to compile and download thecode to the Arduino

•Open the edaquino-com.exe

• In Measurement/Select port menu also select thebiggest number of COM

•Go to the Measurement/Options menu to set theright parameters for the experiments

Installation (online)

• Connect to wifi network• SSID:• Password:

• Download Arduino IDE fromwww.arduino.cc/download_handler.php

• Install Arduino IDE• Download softwares from github.com/miszak-mta-

szte/Edaquino• Unzip• Run edaquino.ino (click ok to folder creation message)

Let’s do some experimets!

Experiments

1. Measuring the value of gravitational acceleration

2. Temperature measuremet

3. Plethysmography – pulse wave measuremet

4. Magnetic induction measuremet

5. …

Determining the focal length with Arduino

Determining the focal length with Arduino

circuit

code

Determining the focal length with Arduino

Determining the focal length with Arduino: The Algorythm

Moving lightsource→Object distance (o)

Moving photoresistorMeasuring light intensity

Finding the position of the max intensity (i)

Calculating thefocal length

Repeat 15 cm < o < 60 cm

Determining the focal length with Arduino: the Hardware

„Falling Drops”: measuring with GPS

wire antenna

GPS

Wemos microcontroller

micro SD card

self-made PCB

„Falling Drops”: measuring with GPS

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

20000

14:52:48 15:21:36 15:50:24 16:19:12 16:48:00 17:16:48 17:45:36

Height as a function of the time

19,25

19,3

19,35

19,4

19,45

19,5

19,55

19,6

46,16 46,18 46,2 46,22 46,24 46,26 46,28 46,3 46,32 46,34 46,36 46,38

Horizontal projectionLongitude

Latitude

Thank you!This work is funded by the Content Pedagogy Research Program

of the Hungarian Academy of Sciences.

• www.inf.u-szeged.hu/miszak/en/• www.noise.inf.u-szeged.hu/edudev/